Finding the Fourth Proportional to 2,009,999.10, 3,014,123.85 and 661,640.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009,999.10 : 3,014,123.85 = 661,640.70 : x
2. Step 2: Convert to fraction form
   2,009,999.10/3,014,123.85 = 661,640.70/x
3. Step 3: Cross multiply
   2,009,999.10x = 3,014,123.85 × 661,640.70
4. Step 4: Simplify right side
   2,009,999.10x = 1,994,267,014,000.69
5. Step 5: Solve for x
   x = 1,994,267,014,000.69/2,009,999.10
6. Step 6: Final answer
   x = 992,173.09